Date Test Approach 1 fetchWeekData implementation

fetchWeekData.swift

func fetchWeekData() {
	do {
		let descriptor = FetchDescriptor<ApproachModel>(predicate: #Predicate { todo in
			todo.startDate >= startDate && todo.endDate <= endDate && todo.shownInWeek == true
		}, sortBy: [SortDescriptor(\.endDate)])
		todos = try modelContext.fetch(descriptor)
	} catch {
		print("Failed to fetch week data")
	}
}